Even Mars Rovers think penis doodles are funny [PHOTO]

You know you used to leave your mark on your high school algebra teacher’s whiteboard by drawing a penis on it. Perhaps even more recently — like as recent as this week — you thought it would be hilarious to draw a penis on your boss’s door.

Well, apparently, the Mars Rovers also get bored and have taken to doodling penises on the surface of the planet while on assignment. NASA’s cameras caught one of the Mars Rovers drawing this piece of art, whether it was purposeful or not: